PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/10-11:43:10
G07     342.3          61.3                2.5 +/-    0.58       2.8 +/-    0.58  0.180 / 0.360
G08     100.8          52.6                4.0 +/-    0.97       4.9 +/-    0.97  0.180 / 0.380
G09     191.6          73.1                4.5 +/-    0.77       4.7 +/-    0.77  0.180 / 0.560
G11     144.7          14.9                2.2 +/-    2.09       5.4 +/-    2.09  0.220 / 0.790
G23     154.6          36.5                2.9 +/-    1.04       4.4 +/-    1.04  0.040 / 0.040
G27     54.6           31.5                2.3 +/-    1.41       3.9 +/-    1.41  0.030 / 0.070
G28     236.5          25.0                3.8 +/-    2.74       7.4 +/-    2.74  0.110 / 0.090
G30     304.0          37.6                2.9 +/-    0.58       4.3 +/-    0.58  0.120 / 0.090